Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information. A. Whigs were able to attract support only in the wealthiest parts of the economy because Democrats dominated in other areas. B. Whig and Democratic areas of influence were naturally split between urban and rural areas, respectively. C. The semisubsistence farming areas dominated by Democrats became increasingly isolated by the Whigs' control of the market economy. D. The Democrats' power was greatest in poorer areas while the Whigs were strongest in those areas where the market was already fully operating.